From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alex Riesen <raa.lkml@gmail.com>
Subject: Re: Resetting working files
Date: Sun, 31 May 2009 23:30:10 +0200
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Cc: Aaron Gray <aaronngray.lists@googlemail.com>,
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To: Nicolas Sebrecht <nicolas.s.dev@gmx.fr>
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2009/5/31 Nicolas Sebrecht <nicolas.s.dev@gmx.fr>:
> The 31/05/09, Aaron Gray wrote:
>>
>> I think index is HEAD or a revision hash. Am I correct ?
>
> HEAD is a reference to a branch name:

Not really. Try "git checkout HEAD^" and run cat .git/HEAD

It is more a pointer to a commit. The pointers to a commit
in git are allowed to be indirect by referencing other pointers.